Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 1 | /* |
Kristofer Jonsson | b42bc0b | 2023-01-04 17:09:28 +0100 | [diff] [blame] | 2 | * Copyright 2020-2023 Arm Limited and/or its affiliates |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 3 | * |
| 4 | * This program is free software and is provided to you under the terms of the |
| 5 | * GNU General Public License version 2 as published by the Free Software |
| 6 | * Foundation, and any use by you of this program is subject to the terms |
| 7 | * of such GNU licence. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, you can access it online at |
| 16 | * http://www.gnu.org/licenses/gpl-2.0.html. |
| 17 | * |
| 18 | * SPDX-License-Identifier: GPL-2.0-only |
| 19 | */ |
| 20 | |
| 21 | /**************************************************************************** |
| 22 | * Includes |
| 23 | ****************************************************************************/ |
| 24 | |
| 25 | #include "ethosu_device.h" |
| 26 | |
| 27 | #include "ethosu_buffer.h" |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 28 | #include "ethosu_core_rpmsg.h" |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 29 | #include "ethosu_capabilities.h" |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 30 | #include "ethosu_inference.h" |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 31 | #include "ethosu_cancel_inference.h" |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 32 | #include "ethosu_network.h" |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 33 | #include "ethosu_network_info.h" |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 34 | #include "uapi/ethosu.h" |
| 35 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 36 | #include <linux/dma-mapping.h> |
| 37 | #include <linux/errno.h> |
| 38 | #include <linux/fs.h> |
| 39 | #include <linux/interrupt.h> |
| 40 | #include <linux/io.h> |
| 41 | #include <linux/of_reserved_mem.h> |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 42 | #include <linux/slab.h> |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 43 | #include <linux/uaccess.h> |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 44 | |
| 45 | /**************************************************************************** |
| 46 | * Defines |
| 47 | ****************************************************************************/ |
| 48 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 49 | /**************************************************************************** |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 50 | * Functions |
| 51 | ****************************************************************************/ |
| 52 | |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 53 | /* Incoming messages */ |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 54 | static int ethosu_handle_msg(struct rpmsg_device *rpdev, |
| 55 | void *data, |
| 56 | int len, |
| 57 | void *priv, |
| 58 | u32 src) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 59 | { |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 60 | struct ethosu_device *edev = dev_get_drvdata(&rpdev->dev); |
| 61 | struct device *dev = &rpdev->dev; |
| 62 | struct ethosu_core_rpmsg *rpmsg = data; |
| 63 | int length = len - sizeof(rpmsg->header); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 64 | int ret; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 65 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 66 | dev_info(dev, |
| 67 | "Msg: magic=0x%08x, type=%u, msg_id=%llu", |
| 68 | rpmsg->header.magic, rpmsg->header.type, rpmsg->header.msg_id); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 69 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 70 | switch (rpmsg->header.type) { |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 71 | case ETHOSU_CORE_MSG_ERR: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 72 | if (length != sizeof(rpmsg->error)) { |
| 73 | dev_warn(dev, |
| 74 | "Msg: Error message of incorrect size. size=%u, expected=%zu", length, |
| 75 | sizeof(rpmsg->error)); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 76 | ret = -EBADMSG; |
| 77 | break; |
| 78 | } |
| 79 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 80 | rpmsg->error.msg[sizeof(rpmsg->error.msg) - 1] = '\0'; |
| 81 | dev_warn(dev, "Msg: Error. type=%u, msg=\"%s\"", |
| 82 | rpmsg->error.type, rpmsg->error.msg); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 83 | ret = -EBADMSG; |
| 84 | break; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 85 | case ETHOSU_CORE_MSG_PING: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 86 | dev_info(dev, "Msg: Ping"); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 87 | ret = ethosu_mailbox_pong(&edev->mailbox); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 88 | break; |
| 89 | case ETHOSU_CORE_MSG_PONG: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 90 | dev_info(dev, "Msg: Pong"); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 91 | break; |
| 92 | case ETHOSU_CORE_MSG_INFERENCE_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 93 | if (length != sizeof(rpmsg->inf_rsp)) { |
| 94 | dev_warn(dev, |
| 95 | "Msg: Inference response of incorrect size. size=%u, expected=%zu", length, |
| 96 | sizeof(rpmsg->inf_rsp)); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 97 | ret = -EBADMSG; |
| 98 | break; |
| 99 | } |
| 100 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 101 | dev_info(dev, |
| 102 | "Msg: Inference response. ofm_count=%u, status=%u", |
| 103 | rpmsg->inf_rsp.ofm_count, rpmsg->inf_rsp.status); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 104 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 105 | ethosu_inference_rsp(edev, rpmsg->header.msg_id, |
| 106 | &rpmsg->inf_rsp); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 107 | break; |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 108 | case ETHOSU_CORE_MSG_CANCEL_INFERENCE_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 109 | if (length != sizeof(rpmsg->cancel_rsp)) { |
| 110 | dev_warn(dev, |
| 111 | "Msg: Cancel Inference response of incorrect size. size=%u, expected=%zu", length, |
| 112 | sizeof(rpmsg->cancel_rsp)); |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 113 | ret = -EBADMSG; |
| 114 | break; |
| 115 | } |
| 116 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 117 | dev_info(dev, |
| 118 | "Msg: Cancel Inference response. status=%u", |
| 119 | rpmsg->cancel_rsp.status); |
| 120 | ethosu_cancel_inference_rsp(edev, rpmsg->header.msg_id, |
| 121 | &rpmsg->cancel_rsp); |
Davide Grohmann | 7e8f508 | 2022-03-23 12:48:45 +0100 | [diff] [blame] | 122 | break; |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 123 | case ETHOSU_CORE_MSG_VERSION_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 124 | if (length != sizeof(rpmsg->version_rsp)) { |
| 125 | dev_warn(dev, |
| 126 | "Msg: Version response of incorrect size. size=%u, expected=%zu", length, |
| 127 | sizeof(rpmsg->version_rsp)); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 128 | ret = -EBADMSG; |
| 129 | break; |
| 130 | } |
| 131 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 132 | dev_info(dev, "Msg: Version response v%u.%u.%u", |
| 133 | rpmsg->version_rsp.major, rpmsg->version_rsp.minor, |
| 134 | rpmsg->version_rsp.patch); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 135 | |
| 136 | /* Check major and minor version match, else return error */ |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 137 | if (rpmsg->version_rsp.major != ETHOSU_CORE_MSG_VERSION_MAJOR || |
| 138 | rpmsg->version_rsp.minor != ETHOSU_CORE_MSG_VERSION_MINOR) { |
| 139 | dev_warn(dev, "Msg: Version mismatch detected! "); |
| 140 | dev_warn(dev, "Local version: v%u.%u.%u", |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 141 | ETHOSU_CORE_MSG_VERSION_MAJOR, |
| 142 | ETHOSU_CORE_MSG_VERSION_MINOR, |
| 143 | ETHOSU_CORE_MSG_VERSION_PATCH); |
| 144 | } |
| 145 | |
| 146 | break; |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 147 | case ETHOSU_CORE_MSG_CAPABILITIES_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 148 | if (length != sizeof(rpmsg->cap_rsp)) { |
| 149 | dev_warn(dev, |
| 150 | "Msg: Capabilities response of incorrect size. size=%u, expected=%zu", length, |
| 151 | sizeof(rpmsg->cap_rsp)); |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 152 | ret = -EBADMSG; |
| 153 | break; |
| 154 | } |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 155 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 156 | dev_info(dev, |
| 157 | "Msg: Capabilities response vs%hhu v%hhu.%hhu p%hhu av%hhu.%hhu.%hhu dv%hhu.%hhu.%hhu mcc%hhu csv%hhu cd%hhu", |
| 158 | rpmsg->cap_rsp.version_status, |
| 159 | rpmsg->cap_rsp.version_major, |
| 160 | rpmsg->cap_rsp.version_minor, |
| 161 | rpmsg->cap_rsp.product_major, |
| 162 | rpmsg->cap_rsp.arch_major_rev, |
| 163 | rpmsg->cap_rsp.arch_minor_rev, |
| 164 | rpmsg->cap_rsp.arch_patch_rev, |
| 165 | rpmsg->cap_rsp.driver_major_rev, |
| 166 | rpmsg->cap_rsp.driver_minor_rev, |
| 167 | rpmsg->cap_rsp.driver_patch_rev, |
| 168 | rpmsg->cap_rsp.macs_per_cc, |
| 169 | rpmsg->cap_rsp.cmd_stream_version, |
| 170 | rpmsg->cap_rsp.custom_dma); |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 171 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 172 | ethosu_capability_rsp(edev, rpmsg->header.msg_id, |
| 173 | &rpmsg->cap_rsp); |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 174 | break; |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 175 | case ETHOSU_CORE_MSG_NETWORK_INFO_RSP: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 176 | if (length != sizeof(rpmsg->net_info_rsp)) { |
| 177 | dev_warn(dev, |
| 178 | "Msg: Network info response of incorrect size. size=%u, expected=%zu", length, |
| 179 | sizeof(rpmsg->net_info_rsp)); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 180 | ret = -EBADMSG; |
| 181 | break; |
| 182 | } |
| 183 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 184 | dev_info(dev, |
| 185 | "Msg: Network info response. status=%u", |
| 186 | rpmsg->net_info_rsp.status); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 187 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 188 | ethosu_network_info_rsp(edev, rpmsg->header.msg_id, |
| 189 | &rpmsg->net_info_rsp); |
Kristofer Jonsson | 3c6a260 | 2022-03-10 11:17:29 +0100 | [diff] [blame] | 190 | |
| 191 | break; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 192 | default: |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 193 | /* This should not happen due to version checks */ |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 194 | dev_warn(dev, "Msg: Protocol error. type=%u", |
| 195 | rpmsg->header.type); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 196 | ret = -EPROTO; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 197 | break; |
| 198 | } |
| 199 | |
| 200 | return ret; |
| 201 | } |
| 202 | |
| 203 | static int ethosu_open(struct inode *inode, |
| 204 | struct file *file) |
| 205 | { |
| 206 | struct ethosu_device *edev = |
| 207 | container_of(inode->i_cdev, struct ethosu_device, cdev); |
| 208 | |
| 209 | file->private_data = edev; |
| 210 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 211 | dev_info(edev->dev, "Device open. file=0x%pK", file); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 212 | |
| 213 | return nonseekable_open(inode, file); |
| 214 | } |
| 215 | |
| 216 | static long ethosu_ioctl(struct file *file, |
| 217 | unsigned int cmd, |
| 218 | unsigned long arg) |
| 219 | { |
| 220 | struct ethosu_device *edev = file->private_data; |
| 221 | void __user *udata = (void __user *)arg; |
| 222 | int ret = -EINVAL; |
| 223 | |
| 224 | ret = mutex_lock_interruptible(&edev->mutex); |
| 225 | if (ret) |
| 226 | return ret; |
| 227 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 228 | dev_info(edev->dev, "Device ioctl. file=0x%pK, cmd=0x%x, arg=0x%lx", |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 229 | file, cmd, arg); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 230 | |
| 231 | switch (cmd) { |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 232 | case ETHOSU_IOCTL_VERSION_REQ: |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 233 | dev_info(edev->dev, "Device ioctl: Send version request"); |
Jonny Svärd | 7c24c77 | 2021-01-14 19:53:17 +0100 | [diff] [blame] | 234 | ret = ethosu_mailbox_version_request(&edev->mailbox); |
| 235 | break; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 236 | case ETHOSU_IOCTL_CAPABILITIES_REQ: { |
| 237 | struct ethosu_uapi_device_capabilities uapi; |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 238 | |
| 239 | dev_info(edev->dev, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 240 | "Device ioctl: Send capabilities request"); |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 241 | |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 242 | ret = ethosu_capabilities_request(edev, &uapi); |
| 243 | if (ret) |
| 244 | break; |
| 245 | |
| 246 | ret = copy_to_user(udata, &uapi, sizeof(uapi)) ? -EFAULT : 0; |
Davide Grohmann | 35ce6c8 | 2021-06-01 15:03:51 +0200 | [diff] [blame] | 247 | break; |
Davide Grohmann | 32660f9 | 2022-04-27 16:49:07 +0200 | [diff] [blame] | 248 | } |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 249 | case ETHOSU_IOCTL_PING: { |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 250 | dev_info(edev->dev, "Device ioctl: Send ping"); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 251 | ret = ethosu_mailbox_ping(&edev->mailbox); |
| 252 | break; |
| 253 | } |
| 254 | case ETHOSU_IOCTL_BUFFER_CREATE: { |
| 255 | struct ethosu_uapi_buffer_create uapi; |
| 256 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 257 | if (copy_from_user(&uapi, udata, sizeof(uapi))) |
| 258 | break; |
| 259 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 260 | dev_info(edev->dev, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 261 | "Device ioctl: Buffer create. capacity=%u", |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 262 | uapi.capacity); |
| 263 | |
| 264 | ret = ethosu_buffer_create(edev, uapi.capacity); |
| 265 | break; |
| 266 | } |
| 267 | case ETHOSU_IOCTL_NETWORK_CREATE: { |
| 268 | struct ethosu_uapi_network_create uapi; |
| 269 | |
| 270 | if (copy_from_user(&uapi, udata, sizeof(uapi))) |
| 271 | break; |
| 272 | |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 273 | dev_info(edev->dev, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 274 | "Device ioctl: Network create. type=%u, fd/index=%u", |
Kristofer Jonsson | 53fd03d | 2022-06-21 16:58:45 +0200 | [diff] [blame] | 275 | uapi.type, uapi.fd); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 276 | |
| 277 | ret = ethosu_network_create(edev, &uapi); |
| 278 | break; |
| 279 | } |
| 280 | default: { |
| 281 | dev_err(edev->dev, "Invalid ioctl. cmd=%u, arg=%lu", |
| 282 | cmd, arg); |
| 283 | break; |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | mutex_unlock(&edev->mutex); |
| 288 | |
| 289 | return ret; |
| 290 | } |
| 291 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 292 | static struct rpmsg_endpoint *ethosu_create_ept(struct rpmsg_device *rpdev) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 293 | { |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 294 | struct device *dev = &rpdev->dev; |
| 295 | struct rpmsg_channel_info info; |
| 296 | struct rpmsg_endpoint *ept; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 297 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 298 | /* Create rpmsg endpoint */ |
| 299 | strncpy(info.name, rpdev->id.name, sizeof(info.name)); |
| 300 | info.src = 0; |
| 301 | info.dst = rpdev->dst; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 302 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 303 | dev_info(dev, "Creating rpmsg endpoint. name=%s, src=%u, dst=%u", |
| 304 | info.name, info.src, info.dst); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 305 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 306 | ept = rpmsg_create_ept(rpdev, ethosu_handle_msg, NULL, info); |
| 307 | if (!ept) { |
| 308 | dev_err(&rpdev->dev, "Failed to create endpoint"); |
| 309 | |
| 310 | return ERR_PTR(-EINVAL); |
| 311 | } |
| 312 | |
| 313 | return ept; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | int ethosu_dev_init(struct ethosu_device *edev, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 317 | struct rpmsg_device *rpdev, |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 318 | struct class *class, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 319 | dev_t devt) |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 320 | { |
| 321 | static const struct file_operations fops = { |
| 322 | .owner = THIS_MODULE, |
| 323 | .open = ðosu_open, |
| 324 | .unlocked_ioctl = ðosu_ioctl, |
| 325 | #ifdef CONFIG_COMPAT |
| 326 | .compat_ioctl = ðosu_ioctl, |
| 327 | #endif |
| 328 | }; |
| 329 | struct device *sysdev; |
| 330 | int ret; |
| 331 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 332 | edev->dev = &rpdev->dev; |
| 333 | edev->rpdev = rpdev; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 334 | edev->class = class; |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 335 | edev->devt = devt; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 336 | mutex_init(&edev->mutex); |
Kristofer Jonsson | 442fefb | 2022-03-17 17:15:52 +0100 | [diff] [blame] | 337 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 338 | edev->ept = ethosu_create_ept(rpdev); |
| 339 | if (IS_ERR(edev->ept)) |
| 340 | return PTR_ERR(edev->ept); |
| 341 | |
| 342 | ret = ethosu_mailbox_init(&edev->mailbox, edev->dev, edev->ept); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 343 | if (ret) |
| 344 | return ret; |
| 345 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 346 | cdev_init(&edev->cdev, &fops); |
| 347 | edev->cdev.owner = THIS_MODULE; |
| 348 | |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 349 | ret = cdev_add(&edev->cdev, edev->devt, 1); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 350 | if (ret) { |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 351 | dev_err(edev->dev, "Failed to add character device."); |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 352 | goto deinit_mailbox; |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 353 | } |
| 354 | |
| 355 | sysdev = device_create(edev->class, NULL, edev->devt, edev, |
Kristofer Jonsson | 4aec376 | 2021-10-13 17:09:27 +0200 | [diff] [blame] | 356 | "ethosu%d", MINOR(edev->devt)); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 357 | if (IS_ERR(sysdev)) { |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 358 | dev_err(edev->dev, "Failed to create device."); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 359 | ret = PTR_ERR(sysdev); |
| 360 | goto del_cdev; |
| 361 | } |
| 362 | |
| 363 | dev_info(edev->dev, |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 364 | "Created Arm Ethos-U device. name=%s, major=%d, minor=%d", |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 365 | dev_name(sysdev), MAJOR(edev->devt), MINOR(edev->devt)); |
| 366 | |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 367 | ethosu_mailbox_ping(&edev->mailbox); |
| 368 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 369 | return 0; |
| 370 | |
| 371 | del_cdev: |
| 372 | cdev_del(&edev->cdev); |
| 373 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 374 | deinit_mailbox: |
| 375 | ethosu_mailbox_deinit(&edev->mailbox); |
| 376 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 377 | return ret; |
| 378 | } |
| 379 | |
| 380 | void ethosu_dev_deinit(struct ethosu_device *edev) |
| 381 | { |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 382 | dev_info(edev->dev, "%s\n", __FUNCTION__); |
| 383 | |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 384 | ethosu_mailbox_deinit(&edev->mailbox); |
Kristofer Jonsson | d779a08 | 2023-01-04 17:09:47 +0100 | [diff] [blame^] | 385 | rpmsg_destroy_ept(edev->ept); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 386 | device_destroy(edev->class, edev->cdev.dev); |
| 387 | cdev_del(&edev->cdev); |
Kristofer Jonsson | 116a635 | 2020-08-20 17:25:23 +0200 | [diff] [blame] | 388 | } |